No, there is no such rule.I would assume that on top of the firewall rule (which you have disabled), there is also an address field set in the /ip service table, and the request comes from an address which is not on this list. This is just a rewording of what @markos222 originally suggested.
Yes, connections to winbox allowed only from my ip. Other types of connections also allowed only from my ip.Hi
Doy you have any filter in ip-> services?